Days Set Up
Daily, 24 hrs
Analytic Time

2 hours

MiChart Code
Alpha-1-Antitrypsin
Soft Order Code
A1AT

Test Updated:

Synonyms

A-1 Antitrypsin
A1AT
AAT
Alpha 1 Antitrypsin
Antitrypsin, Alpha-1
ALPHA-1 ANTITRYPSIN, Serum
ALPHA-1 ANTITRYPSIN
A1-ANTITRP
CRP
C-REACTIVE PROTEIN SCREEN

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Test Overview

Test Methodology

Immunoturbidimetric

Test Usage

To detect hereditary decreases in the production of alpha-1 antitrypsin. Decreased or nearly absent levels of A1AT can genetically predispose patients to chronic obstructive lung disease and liver disease (cirrhosis in children).

Reference Range

113 - 263 mg/dL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in SST tube.

Collection Offsite

Collect specimen in an SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate up to 7 days or freeze for up to 3 months. Avoid repeated freezing and thawing of specimen.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
82103
Pro Fee Code
 
LOINC
1825-9

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.